Stump-puller.



.UNITED STATES PATENT QFFTCE.

SVEN JACOBSON AND SVEND E. SVENDSON, OF GlG HARBOR, WASHINGTON.

STUMP-PULLER.

Specification of Letters Patent.

Patented Aug. 13, 1907.

Application filed January 15,1907. Serial No. 352,878.

To all whom it may concern:

Be it known that we, SVEN JACOBSON and SvnND E. SvENDsoN, citizens of the United States of America, residing at Gig Harbor, in the county of Pierce and State of Washington, have invented certain new and useful Improvements in Stump-Pullers, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to stump pullers and especially to that class in which man-power is used, and has for its object to so simplify the construction of the frame and the arrangement of the gear wheels that the cost, compared with other machines of the same power and strength, shall be reduced. We attain this object by the mechanism illustrated in the accompanying drawing in which,

Figure 1 is a front view of our machine, Fig. 2 is a vertical longitudinal section of a portion thereof, Fig. 3 is a side view of the rear end of one of the runners showing the swivel hook, and Fig. 4 is a reduced side view of our machine in use.

Similar numerals of reference refer to similar parts throughout the several views.

The frame of our machine consists of a pair of long heavy timber runners 1, braced together by the cross timbers 2, and forming therewith a sled. The cross timbers 2 are notched into the runners 1 one-half of their depth and are situated near the center of the runners, one cross timber being located directly under each of the hereinafter described shafts of the power mechanism. Short heavy timbers 3 are laid on the runners 1 being notched over the cross timbers 2. The upper timbers 4 are laid on top of the timbers 3 and extend over their front and rear ends. All these timbers 1., 2, 3 and 4 are bolted together by the long bolts 5 passing vertically through them. The two upper cross pieces 6 extend, in the front and rear, from the timbers 4 being so cured thereto, over the overhanging ends thereof, by the bolts 7. A heavy metal piece 8 is secured by the bolts 10 to the center of the cross timbers 2. A similar but longer metal piece 9 is secured, vertically over the piece 8, to the front and rear cross pieces 6 by the bolts 11. These metal bars 8 and 9 support the operating or power mechanism.

The power mechanism consists of three Vertical shafts 12, 13 and 14 passing through holes in the metal bars 8 and 9 being held from vertical downward movement therein by the collars 15, and carrying their respective gear wheels. The shafts are so spaced that their gear wheels will mesh in the proper manner. A pinion 16 is secured to the rear shaft 12 and meshes with a large gear 17 secured to the middle shaft 13. The shaft 13 also carries a loose pinion 18 thereon, said pinion being secured to the shaft 13 by the easily removable key 19. The pinion 18 meshes with the large gear 20 which is secured to the front shaft 14. A ratchet wheel 21 is secured to the shaft 14 above the metal bar 9, and a suitable dog 22 is pivoted to the bar 9. A drum 23 is also socured to the shaft 14 between the metal pieces 8 and 9 and is adapted to wind the cable 24 thereon, so as to pull up the stump, indicated at 25, to which it is secured.

The machine is anchored at the rear by securing the cables 26 to any sufficiently firmly fixed body and then hooking them into the swivel hooks 27. These hooks 27 extend out beyond the rear of the runners 1 and are swivel mounted, on a horizontal axis, to the straps 28 which are securely bolted to the runners l.

The machine is operated by a long handle or lever 29 which has a downward socket at its end adapted to [it on the squared end of any of the shafts 12, 13 or 14. If great power is required the lever 29 is fitted to the shaft 12, but if sufficient power can be obtained to overcome a lighter resistance then the lever 29 is applied to the shaft 13, while if it is desired to simply tighten up the cable or overcome some other light resistance then the key 19 is removed from the pinion 18 and the lcver29 is applied to the shaft 14. The tops of the shafts are all on the same level hence, since the socket on the lever 29 is downward therefrom, the lever 29 will pass freely over the shafts to which it is not applied and may be forced completely and continuously around the circle.

Having described our invention, what we claim, is

A stump puller comprising a pair of long runners, crosstimbers notched thcreinto. a pair of short timbers on said runners and notched over said cross-timbers, a pair of upper timbers overhanging both ends of both said short timbers, all said timbers being bolted together in sets by bolts passing vertically through each set; a pair of upper cross timbers bolted over the overhanging ends of said upper timbers: a lower metal bar secured to said lower crosstimbers: an upper metal bar secured to said upper cross timbers: a set of three vertical shafts mounted in both said metal bars and extending upward therefrom; a winding drum mounted on one of the end shafts between said metal bars: a train of double reduction gears mounted on said shafts; a removable key joining the second pinion of said gears to the intermediate shaft; :1 horizontal operating lever with a downward extending socket thereon adapted to fit over and engage to operate any of said shafts; and a pair of swivel mounted hooks secured to the rear ends of said runners and adapted to engage the anchoring cable, substantially as and for the purpose described.

In testimony whereof we aflix our signatures in presence of two witnesses.

SVEN JACOBSON. SVEND E. SVENDSON. Witnesses:

MATH. Jiiconsou, A. W. UDDnNBnRG. 

